Mercurial > repos > blastem
annotate blastem.c @ 351:2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
author | Mike Pavone <pavone@retrodev.com> |
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date | Tue, 21 May 2013 22:08:59 -0700 |
parents | aff29d50afd5 |
children | 15dd6418fe67 |
rev | line source |
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1 #include "68kinst.h" |
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2 #include "m68k_to_x86.h" |
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3 #include "z80_to_x86.h" |
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4 #include "mem.h" |
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5 #include "vdp.h" |
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6 #include "render.h" |
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7 #include "blastem.h" |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include <string.h> |
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11 |
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12 #define CARTRIDGE_WORDS 0x200000 |
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13 #define RAM_WORDS 32 * 1024 |
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14 #define Z80_RAM_BYTES 8 * 1024 |
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15 #define MCLKS_PER_68K 7 |
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16 #define MCLKS_PER_Z80 15 |
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17 //TODO: Figure out the exact value for this |
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18 #define CYCLE_NEVER 0xFFFFFFFF |
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19 #define LINES_NTSC 262 |
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20 #define LINES_PAL 312 |
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21 |
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22 uint32_t mclks_per_frame = MCLKS_LINE*LINES_NTSC; |
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23 |
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24 uint16_t cart[CARTRIDGE_WORDS]; |
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25 uint16_t ram[RAM_WORDS]; |
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26 uint8_t z80_ram[Z80_RAM_BYTES]; |
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27 |
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28 io_port gamepad_1; |
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29 io_port gamepad_2; |
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30 |
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31 int headless = 0; |
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32 int z80_enabled = 1; |
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33 int frame_limit = 1; |
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34 |
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35 #ifndef MIN |
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36 #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
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37 #endif |
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38 |
166 | 39 #define SMD_HEADER_SIZE 512 |
40 #define SMD_MAGIC1 0x03 | |
41 #define SMD_MAGIC2 0xAA | |
42 #define SMD_MAGIC3 0xBB | |
43 #define SMD_BLOCK_SIZE 0x4000 | |
44 | |
45 int load_smd_rom(long filesize, FILE * f) | |
46 { | |
47 uint8_t block[SMD_BLOCK_SIZE]; | |
48 filesize -= SMD_HEADER_SIZE; | |
49 fseek(f, SMD_HEADER_SIZE, SEEK_SET); | |
50 | |
51 uint16_t * dst = cart; | |
52 while (filesize > 0) { | |
53 fread(block, 1, SMD_BLOCK_SIZE, f); | |
54 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) { | |
55 *(dst++) = *high << 8 | *low; | |
56 } | |
57 filesize -= SMD_BLOCK_SIZE; | |
58 } | |
59 return 1; | |
60 } | |
61 | |
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62 int load_rom(char * filename) |
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63 { |
166 | 64 uint8_t header[10]; |
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65 FILE * f = fopen(filename, "rb"); |
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66 if (!f) { |
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67 return 0; |
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68 } |
166 | 69 fread(header, 1, sizeof(header), f); |
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70 fseek(f, 0, SEEK_END); |
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71 long filesize = ftell(f); |
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72 if (filesize/2 > CARTRIDGE_WORDS) { |
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73 //carts bigger than 4MB not currently supported |
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74 filesize = CARTRIDGE_WORDS*2; |
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75 } |
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76 fseek(f, 0, SEEK_SET); |
166 | 77 if (header[1] == SMD_MAGIC1 && header[8] == SMD_MAGIC2 && header[9] == SMD_MAGIC3) { |
78 int i; | |
79 for (i = 3; i < 8; i++) { | |
80 if (header[i] != 0) { | |
81 break; | |
82 } | |
83 } | |
84 if (i == 8) { | |
85 if (header[2]) { | |
86 fprintf(stderr, "%s is a split SMD ROM which is not currently supported", filename); | |
87 exit(1); | |
88 } | |
89 return load_smd_rom(filesize, f); | |
90 } | |
91 } | |
92 fread(cart, 2, filesize/2, f); | |
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93 fclose(f); |
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94 for(unsigned short * cur = cart; cur - cart < (filesize/2); ++cur) |
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95 { |
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96 *cur = (*cur >> 8) | (*cur << 8); |
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97 } |
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98 //TODO: Mirror ROM |
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99 return 1; |
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100 } |
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101 |
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102 uint16_t read_dma_value(uint32_t address) |
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103 { |
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104 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do div by 2 |
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105 if (address < 0x200000) { |
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106 return cart[address]; |
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107 } else if(address >= 0x700000) { |
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108 return ram[address & 0x7FFF]; |
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109 } |
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110 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area |
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111 return 0; |
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112 } |
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113 |
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114 //TODO: Make these dependent on the video mode |
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115 //#define VINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_68K) |
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116 #define ZVINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_Z80) |
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117 //#define VINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_68K) |
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118 //#define ZVINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_Z80) |
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119 |
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120 void adjust_int_cycle(m68k_context * context, vdp_context * v_context) |
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121 { |
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122 context->int_cycle = CYCLE_NEVER; |
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123 if ((context->status & 0x7) < 6) { |
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124 uint32_t next_vint = vdp_next_vint(v_context); |
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125 if (next_vint != CYCLE_NEVER) { |
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126 next_vint /= MCLKS_PER_68K; |
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127 context->int_cycle = next_vint; |
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128 context->int_num = 6; |
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129 } |
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130 if ((context->status & 0x7) < 4) { |
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131 uint32_t next_hint = vdp_next_hint(v_context); |
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132 if (next_hint != CYCLE_NEVER) { |
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133 next_hint /= MCLKS_PER_68K; |
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134 if (next_hint < context->int_cycle) { |
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135 context->int_cycle = next_hint; |
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136 context->int_num = 4; |
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137 |
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138 } |
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139 } |
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140 } |
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141 } |
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142 |
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143 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle; |
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144 /*printf("Cyc: %d, Trgt: %d, Int Cyc: %d, Int: %d, Mask: %X, V: %d, H: %d, HICount: %d, HReg: %d, Line: %d\n", |
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145 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7), |
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146 v_context->regs[REG_MODE_2] & 0x20, v_context->regs[REG_MODE_1] & 0x10, v_context->hint_counter, v_context->regs[REG_HINT], v_context->cycles / MCLKS_LINE);*/ |
186
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147 } |
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148 |
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149 int break_on_sync = 0; |
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150 |
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151 uint8_t reset = 1; |
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152 uint8_t need_reset = 0; |
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153 uint8_t busreq = 0; |
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154 uint8_t busack = 0; |
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155 uint32_t busack_cycle = CYCLE_NEVER; |
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156 uint8_t new_busack = 0; |
280 | 157 //#define DO_DEBUG_PRINT |
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158 #ifdef DO_DEBUG_PRINT |
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159 #define dprintf printf |
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160 #define dputs puts |
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161 #else |
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162 #define dprintf |
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163 #define dputs |
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164 #endif |
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165 |
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166 void sync_z80(z80_context * z_context, uint32_t mclks) |
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167 { |
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168 if (z80_enabled && !reset && !busreq) { |
333 | 169 genesis_context * gen = z_context->system; |
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170 if (need_reset) { |
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171 z80_reset(z_context); |
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172 need_reset = 0; |
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173 } |
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174 z_context->sync_cycle = mclks / MCLKS_PER_Z80; |
333 | 175 uint32_t vint_cycle = vdp_next_vint_z80(gen->vdp) / MCLKS_PER_Z80; |
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176 while (z_context->current_cycle < z_context->sync_cycle) { |
335 | 177 if (z_context->iff1 && z_context->current_cycle < vint_cycle) { |
178 z_context->int_cycle = vint_cycle < z_context->int_enable_cycle ? z_context->int_enable_cycle : vint_cycle; | |
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179 } |
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180 z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle; |
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181 dprintf("Running Z80 from cycle %d to cycle %d. Native PC: %p\n", z_context->current_cycle, z_context->sync_cycle, z_context->native_pc); |
260
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182 z80_run(z_context); |
268
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183 dprintf("Z80 ran to cycle %d\n", z_context->current_cycle); |
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184 } |
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185 } else { |
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186 z_context->current_cycle = mclks / MCLKS_PER_Z80; |
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187 } |
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188 } |
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189 uint32_t frame=0; |
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190 m68k_context * sync_components(m68k_context * context, uint32_t address) |
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191 { |
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192 //TODO: Handle sync targets smaller than a single frame |
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193 genesis_context * gen = context->system; |
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194 vdp_context * v_context = gen->vdp; |
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195 z80_context * z_context = gen->z80; |
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196 uint32_t mclks = context->current_cycle * MCLKS_PER_68K; |
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197 sync_z80(z_context, mclks); |
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198 if (mclks >= mclks_per_frame) { |
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199 ym_run(gen->ym, context->current_cycle); |
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200 gen->ym->current_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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201 //printf("reached frame end | 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, mclks); |
342
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202 vdp_run_context(v_context, mclks_per_frame); |
215
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203 if (!headless) { |
338
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204 break_on_sync |= wait_render_frame(v_context, frame_limit); |
215
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205 } |
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206 frame++; |
342
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207 mclks -= mclks_per_frame; |
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208 vdp_adjust_cycles(v_context, mclks_per_frame); |
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209 io_adjust_cycles(&gamepad_1, context->current_cycle, mclks_per_frame/MCLKS_PER_68K); |
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210 io_adjust_cycles(&gamepad_2, context->current_cycle, mclks_per_frame/MCLKS_PER_68K); |
344
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211 if (busack_cycle != CYCLE_NEVER) { |
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212 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) { |
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213 busack_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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214 } else { |
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215 busack_cycle = CYCLE_NEVER; |
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216 busack = new_busack; |
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217 } |
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218 } |
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219 context->current_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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220 if (z_context->current_cycle >= mclks_per_frame/MCLKS_PER_Z80) { |
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221 z_context->current_cycle -= mclks_per_frame/MCLKS_PER_Z80; |
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222 } else { |
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223 z_context->current_cycle = 0; |
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224 } |
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225 if (mclks) { |
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226 vdp_run_context(v_context, mclks); |
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227 } |
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228 } else { |
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229 //printf("running VDP for %d cycles\n", mclks - v_context->cycles); |
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230 vdp_run_context(v_context, mclks); |
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231 } |
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232 if (context->int_ack) { |
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233 vdp_int_ack(v_context, context->int_ack); |
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234 context->int_ack = 0; |
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235 } |
186
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236 adjust_int_cycle(context, v_context); |
198
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237 if (break_on_sync && address) { |
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238 break_on_sync = 0; |
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239 debugger(context, address); |
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240 } |
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241 return context; |
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242 } |
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243 |
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244 m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value) |
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245 { |
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246 if (vdp_port & 0x2700E0) { |
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247 printf("machine freeze due to write to address %X\n", 0xC00000 | vdp_port); |
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248 exit(1); |
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249 } |
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250 vdp_port &= 0x1F; |
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251 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle); |
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252 sync_components(context, 0); |
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253 vdp_context * v_context = context->video_context; |
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254 if (vdp_port < 0x10) { |
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255 int blocked; |
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256 uint32_t before_cycle = v_context->cycles; |
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257 if (vdp_port < 4) { |
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258 while (vdp_data_port_write(v_context, value) < 0) { |
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259 while(v_context->flags & FLAG_DMA_RUN) { |
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260 vdp_run_dma_done(v_context, mclks_per_frame); |
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261 if (v_context->cycles >= mclks_per_frame) { |
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262 if (!headless) { |
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263 wait_render_frame(v_context, frame_limit); |
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264 } |
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265 vdp_adjust_cycles(v_context, mclks_per_frame); |
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266 io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
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267 io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
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268 if (busack_cycle != CYCLE_NEVER) { |
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269 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) { |
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270 busack_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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271 } else { |
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272 busack_cycle = CYCLE_NEVER; |
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273 busack = new_busack; |
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274 } |
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275 } |
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276 } |
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277 } |
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278 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
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279 } |
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280 } else if(vdp_port < 8) { |
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281 blocked = vdp_control_port_write(v_context, value); |
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282 if (blocked) { |
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283 while (blocked) { |
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284 while(v_context->flags & FLAG_DMA_RUN) { |
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285 vdp_run_dma_done(v_context, mclks_per_frame); |
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286 if (v_context->cycles >= mclks_per_frame) { |
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287 if (!headless) { |
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288 wait_render_frame(v_context, frame_limit); |
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289 } |
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290 vdp_adjust_cycles(v_context, mclks_per_frame); |
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291 io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
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292 io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
344
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293 if (busack_cycle != CYCLE_NEVER) { |
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294 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) { |
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295 busack_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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296 } else { |
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297 busack_cycle = CYCLE_NEVER; |
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298 busack = new_busack; |
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299 } |
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300 } |
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301 } |
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302 } |
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303 if (blocked < 0) { |
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304 blocked = vdp_control_port_write(v_context, value); |
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305 } else { |
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306 blocked = 0; |
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307 } |
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308 } |
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309 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
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310 } else { |
186
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311 adjust_int_cycle(context, v_context); |
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312 } |
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313 } else { |
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314 printf("Illegal write to HV Counter port %X\n", vdp_port); |
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315 exit(1); |
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316 } |
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317 if (v_context->cycles != before_cycle) { |
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318 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
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319 } |
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320 } else if (vdp_port < 0x18) { |
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321 //TODO: Implement PSG |
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322 } else { |
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323 //TODO: Implement undocumented test register(s) |
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324 } |
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325 return context; |
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326 } |
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327 |
343
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328 m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value) |
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329 { |
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330 return vdp_port_write(vdp_port, context, value | value << 8); |
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331 } |
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332 |
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333 uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context) |
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334 { |
343
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335 if (vdp_port & 0x2700E0) { |
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336 printf("machine freeze due to read from address %X\n", 0xC00000 | vdp_port); |
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337 exit(1); |
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338 } |
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339 vdp_port &= 0x1F; |
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340 uint16_t value; |
198
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341 sync_components(context, 0); |
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342 vdp_context * v_context = context->video_context; |
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343 if (vdp_port < 0x10) { |
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344 if (vdp_port < 4) { |
343
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345 value = vdp_data_port_read(v_context); |
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346 } else if(vdp_port < 8) { |
343
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347 value = vdp_control_port_read(v_context); |
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348 } else { |
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349 value = vdp_hv_counter_read(v_context); |
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350 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles); |
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351 } |
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352 context->current_cycle = v_context->cycles/MCLKS_PER_68K; |
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353 } else { |
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354 printf("Illegal read from PSG or test register port %X\n", vdp_port); |
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355 exit(1); |
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356 } |
343
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357 return value; |
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358 } |
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359 |
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360 uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context) |
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361 { |
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362 uint16_t value = vdp_port_read(vdp_port, context); |
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363 if (vdp_port & 1) { |
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364 return value; |
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365 } else { |
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366 return value >> 8; |
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367 } |
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368 } |
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369 |
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370 #define TH 0x40 |
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371 #define TH_TIMEOUT 8000 |
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372 |
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373 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction) |
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374 { |
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375 /*uint8_t control = pad->control | 0x80; |
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376 uint8_t th = control & pad->output; |
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377 if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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378 printf("adjust_cycles | control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, current_cycle); |
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379 }*/ |
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380 if (current_cycle >= pad->timeout_cycle) { |
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381 pad->th_counter = 0; |
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382 } else { |
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383 pad->timeout_cycle -= deduction; |
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384 } |
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385 if (busack_cycle < CYCLE_NEVER && current_cycle < busack_cycle) { |
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386 busack_cycle -= deduction; |
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387 } |
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388 } |
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389 |
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390 void io_data_write(io_port * pad, m68k_context * context, uint8_t value) |
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391 { |
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392 if (pad->control & TH) { |
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393 //check if TH has changed |
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394 if ((pad->output & TH) ^ (value & TH)) { |
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395 if (context->current_cycle >= pad->timeout_cycle) { |
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396 pad->th_counter = 0; |
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397 } |
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398 if (!(value & TH)) { |
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399 pad->th_counter++; |
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400 } |
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401 pad->timeout_cycle = context->current_cycle + TH_TIMEOUT; |
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402 } |
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403 } |
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404 pad->output = value; |
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405 } |
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406 |
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407 uint8_t io_data_read(io_port * pad, m68k_context * context) |
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408 { |
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409 uint8_t control = pad->control | 0x80; |
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410 uint8_t th = control & pad->output; |
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411 uint8_t input; |
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412 if (context->current_cycle >= pad->timeout_cycle) { |
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413 pad->th_counter = 0; |
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414 } |
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415 /*if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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416 printf("io_data_read | control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, context->current_cycle); |
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417 }*/ |
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418 if (th) { |
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419 if (pad->th_counter == 3) { |
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420 input = pad->input[GAMEPAD_EXTRA]; |
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421 } else { |
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422 input = pad->input[GAMEPAD_TH1]; |
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423 } |
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424 } else { |
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425 if (pad->th_counter == 3) { |
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426 input = pad->input[GAMEPAD_TH0] | 0xF; |
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427 } else if(pad->th_counter == 4) { |
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428 input = pad->input[GAMEPAD_TH0] & 0x30; |
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429 } else { |
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430 input = pad->input[GAMEPAD_TH0] | 0xC; |
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431 } |
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432 } |
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433 uint8_t value = ((~input) & (~control)) | (pad->output & control); |
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434 /*if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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435 printf ("value: %X\n", value); |
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436 }*/ |
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437 return value; |
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438 } |
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439 |
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440 uint32_t zram_counter = 0; |
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441 #define Z80_ACK_DELAY 3 |
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442 #define Z80_BUSY_DELAY 1//TODO: Find the actual value for this |
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443 #define Z80_REQ_BUSY 1 |
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444 #define Z80_REQ_ACK 0 |
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445 #define Z80_RES_BUSACK reset |
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446 |
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447 m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value) |
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448 { |
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449 genesis_context * gen = context->system; |
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450 if (location < 0x10000) { |
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451 if (busack_cycle <= context->current_cycle) { |
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452 busack = new_busack; |
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453 busack_cycle = CYCLE_NEVER; |
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454 } |
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455 if (!(busack || reset)) { |
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456 location &= 0x7FFF; |
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457 if (location < 0x4000) { |
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458 z80_ram[location & 0x1FFF] = value; |
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459 z80_handle_code_write(location & 0x1FFF, gen->z80); |
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460 } else if (location < 0x6000) { |
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461 ym_run(gen->ym, context->current_cycle); |
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462 if (location & 1) { |
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463 ym_data_write(gen->ym, value); |
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464 } else if(location & 2) { |
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465 ym_address_write_part2(gen->ym, value); |
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466 } else { |
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467 ym_address_write_part1(gen->ym, value); |
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468 } |
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469 } |
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470 } |
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471 } else { |
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472 location &= 0x1FFF; |
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473 if (location < 0x100) { |
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474 switch(location/2) |
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475 { |
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476 case 0x1: |
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477 io_data_write(&gamepad_1, context, value); |
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478 break; |
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479 case 0x2: |
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480 io_data_write(&gamepad_2, context, value); |
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481 break; |
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482 case 0x3://PORT C Data |
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483 break; |
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484 case 0x4: |
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485 gamepad_1.control = value; |
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486 break; |
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|
487 case 0x5: |
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|
488 gamepad_2.control = value; |
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|
489 break; |
88
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|
490 } |
153
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|
491 } else { |
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|
492 if (location == 0x1100) { |
288
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493 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
336
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494 if (busack_cycle <= context->current_cycle) { |
153
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diff
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495 busack = new_busack; |
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diff
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496 busack_cycle = CYCLE_NEVER; |
88
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497 } |
153
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498 if (value & 1) { |
271
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499 dputs("bus requesting Z80"); |
336
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diff
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500 |
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501 if(!reset && !busreq) { |
289
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288
diff
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502 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
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288
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503 new_busack = Z80_REQ_ACK; |
336
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504 busreq = 1; |
153
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505 } |
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506 } else { |
260
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507 if (busreq) { |
271
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508 dputs("releasing z80 bus"); |
280 | 509 #ifdef DO_DEBUG_PRINT |
279
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510 char fname[20]; |
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511 sprintf(fname, "zram-%d", zram_counter++); |
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512 FILE * f = fopen(fname, "wb"); |
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513 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
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514 fclose(f); |
280 | 515 #endif |
336
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diff
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516 busack_cycle = ((gen->z80->current_cycle + Z80_BUSY_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K; |
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517 new_busack = Z80_REQ_BUSY; |
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518 busreq = 0; |
260
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diff
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519 } |
289
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520 //busack_cycle = CYCLE_NEVER; |
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|
521 //busack = Z80_REQ_BUSY; |
336
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diff
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|
522 |
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523 } |
153
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diff
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524 } else if (location == 0x1200) { |
288
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525 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
153
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149
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526 if (value & 1) { |
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149
diff
changeset
|
527 if (reset && busreq) { |
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149
diff
changeset
|
528 new_busack = 0; |
289
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529 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
153
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530 } |
260
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|
531 //TODO: Deal with the scenario in which reset is not asserted long enough |
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532 if (reset) { |
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|
533 need_reset = 1; |
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534 //TODO: Add necessary delay between release of reset and start of execution |
288
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535 gen->z80->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80; |
260
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536 } |
153
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diff
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|
537 reset = 0; |
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|
538 } else { |
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diff
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|
539 reset = 1; |
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|
540 } |
88
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diff
changeset
|
541 } |
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diff
changeset
|
542 } |
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diff
changeset
|
543 } |
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diff
changeset
|
544 return context; |
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diff
changeset
|
545 } |
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diff
changeset
|
546 |
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diff
changeset
|
547 m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value) |
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diff
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|
548 { |
288
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280
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|
549 genesis_context * gen = context->system; |
153
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diff
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|
550 if (location < 0x10000) { |
336
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parents:
335
diff
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|
551 if (busack_cycle <= context->current_cycle) { |
153
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149
diff
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|
552 busack = new_busack; |
42c031184e8a
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diff
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|
553 busack_cycle = CYCLE_NEVER; |
42c031184e8a
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parents:
149
diff
changeset
|
554 } |
42c031184e8a
Implement access to Z80 RAM
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149
diff
changeset
|
555 if (!(busack || reset)) { |
42c031184e8a
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149
diff
changeset
|
556 location &= 0x7FFF; |
42c031184e8a
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149
diff
changeset
|
557 if (location < 0x4000) { |
42c031184e8a
Implement access to Z80 RAM
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149
diff
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|
558 z80_ram[location & 0x1FFE] = value >> 8; |
288
a8ee7934a1f8
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Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
559 z80_handle_code_write(location & 0x1FFE, gen->z80); |
a8ee7934a1f8
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parents:
280
diff
changeset
|
560 } else if (location < 0x6000) { |
a8ee7934a1f8
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parents:
280
diff
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|
561 ym_run(gen->ym, context->current_cycle); |
a8ee7934a1f8
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280
diff
changeset
|
562 if (location & 1) { |
a8ee7934a1f8
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parents:
280
diff
changeset
|
563 ym_data_write(gen->ym, value >> 8); |
a8ee7934a1f8
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Mike Pavone <pavone@retrodev.com>
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280
diff
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|
564 } else if(location & 2) { |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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parents:
280
diff
changeset
|
565 ym_address_write_part2(gen->ym, value >> 8); |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
566 } else { |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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parents:
280
diff
changeset
|
567 ym_address_write_part1(gen->ym, value >> 8); |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
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|
568 } |
153
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
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149
diff
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|
569 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
570 } |
c339559f1d4f
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Mike Pavone <pavone@retrodev.com>
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diff
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|
571 } else { |
153
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
572 location &= 0x1FFF; |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
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|
573 if (location < 0x100) { |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
574 switch(location/2) |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
575 { |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
576 case 0x1: |
42c031184e8a
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149
diff
changeset
|
577 io_data_write(&gamepad_1, context, value); |
42c031184e8a
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parents:
149
diff
changeset
|
578 break; |
42c031184e8a
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149
diff
changeset
|
579 case 0x2: |
42c031184e8a
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149
diff
changeset
|
580 io_data_write(&gamepad_2, context, value); |
42c031184e8a
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parents:
149
diff
changeset
|
581 break; |
42c031184e8a
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parents:
149
diff
changeset
|
582 case 0x3://PORT C Data |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
583 break; |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
584 case 0x4: |
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parents:
149
diff
changeset
|
585 gamepad_1.control = value; |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
586 break; |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
587 case 0x5: |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
588 gamepad_2.control = value; |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
589 break; |
88
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
590 } |
153
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
591 } else { |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
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149
diff
changeset
|
592 //printf("IO Write of %X to %X @ %d\n", value, location, context->current_cycle); |
42c031184e8a
Implement access to Z80 RAM
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149
diff
changeset
|
593 if (location == 0x1100) { |
288
a8ee7934a1f8
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Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
594 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
336
87b65e5ce1ab
Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too
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parents:
335
diff
changeset
|
595 if (busack_cycle <= context->current_cycle) { |
153
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parents:
149
diff
changeset
|
596 busack = new_busack; |
42c031184e8a
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Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
597 busack_cycle = CYCLE_NEVER; |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
598 } |
153
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
599 if (value & 0x100) { |
271
969ee17471c5
Protect debug prints for busreq/reset regs with appropriate macros
Mike Pavone <pavone@retrodev.com>
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268
diff
changeset
|
600 dprintf("bus requesting Z80 @ %d\n", (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80); |
336
87b65e5ce1ab
Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too
Mike Pavone <pavone@retrodev.com>
parents:
335
diff
changeset
|
601 |
87b65e5ce1ab
Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too
Mike Pavone <pavone@retrodev.com>
parents:
335
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602 if(!reset && !busreq) { |
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603 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
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604 new_busack = Z80_REQ_ACK; |
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605 busreq = 1; |
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606 } |
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607 } else { |
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608 if (busreq) { |
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609 dprintf("releasing Z80 bus @ %d\n", (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80); |
280 | 610 #ifdef DO_DEBUG_PRINT |
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611 char fname[20]; |
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612 sprintf(fname, "zram-%d", zram_counter++); |
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613 FILE * f = fopen(fname, "wb"); |
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614 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
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615 fclose(f); |
280 | 616 #endif |
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617 busack_cycle = ((gen->z80->current_cycle + Z80_BUSY_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K; |
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618 new_busack = Z80_REQ_BUSY; |
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619 busreq = 0; |
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620 } |
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621 //busack_cycle = CYCLE_NEVER; |
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622 //busack = Z80_REQ_BUSY; |
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623 } |
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624 } else if (location == 0x1200) { |
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625 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
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626 if (value & 0x100) { |
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627 if (reset && busreq) { |
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628 new_busack = 0; |
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629 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
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630 } |
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631 //TODO: Deal with the scenario in which reset is not asserted long enough |
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632 if (reset) { |
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633 need_reset = 1; |
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634 //TODO: Add necessary delay between release of reset and start of execution |
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635 gen->z80->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80; |
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636 } |
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637 reset = 0; |
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638 } else { |
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639 reset = 1; |
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640 } |
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641 } |
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642 } |
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643 } |
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644 return context; |
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645 } |
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646 |
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647 #define USA 0x80 |
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648 #define JAP 0x00 |
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649 #define EUR 0xC0 |
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650 #define NO_DISK 0x20 |
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651 uint8_t version_reg = NO_DISK | USA; |
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652 |
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653 uint8_t io_read(uint32_t location, m68k_context * context) |
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654 { |
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655 uint8_t value; |
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656 genesis_context *gen = context->system; |
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657 if (location < 0x10000) { |
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658 if (busack_cycle <= context->current_cycle) { |
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659 busack = new_busack; |
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660 busack_cycle = CYCLE_NEVER; |
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661 } |
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662 if (!(busack==Z80_REQ_BUSY || reset)) { |
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663 location &= 0x7FFF; |
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664 if (location < 0x4000) { |
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665 value = z80_ram[location & 0x1FFF]; |
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666 } else if (location < 0x6000) { |
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667 ym_run(gen->ym, context->current_cycle); |
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668 value = ym_read_status(gen->ym); |
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669 } else { |
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670 value = 0xFF; |
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671 } |
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672 } else { |
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673 value = 0xFF; |
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674 } |
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675 } else { |
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676 location &= 0x1FFF; |
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677 if (location < 0x100) { |
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678 switch(location/2) |
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679 { |
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680 case 0x0: |
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681 //version bits should be 0 for now since we're not emulating TMSS |
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682 value = version_reg; |
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683 break; |
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684 case 0x1: |
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685 value = io_data_read(&gamepad_1, context); |
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686 break; |
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687 case 0x2: |
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688 value = io_data_read(&gamepad_2, context); |
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689 break; |
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690 case 0x3://PORT C Data |
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691 break; |
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692 case 0x4: |
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693 value = gamepad_1.control; |
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694 break; |
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695 case 0x5: |
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696 value = gamepad_2.control; |
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697 break; |
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698 default: |
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699 value = 0xFF; |
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700 } |
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701 } else { |
343
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702 if (location == 0x1100) { |
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703 if (busack_cycle <= context->current_cycle) { |
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704 busack = new_busack; |
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705 busack_cycle = CYCLE_NEVER; |
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706 } |
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707 value = Z80_RES_BUSACK || busack; |
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708 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d, busack: %d, busack_cycle %d)\n", value, context->current_cycle, reset, busack, busack_cycle); |
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709 } else if (location == 0x1200) { |
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710 value = !reset; |
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711 } else { |
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712 value = 0xFF; |
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713 printf("Byte read of unknown IO location: %X\n", location); |
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714 } |
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715 } |
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716 } |
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717 return value; |
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718 } |
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719 |
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720 uint16_t io_read_w(uint32_t location, m68k_context * context) |
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721 { |
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|
722 uint16_t value; |
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723 genesis_context * gen = context->system; |
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724 if (location < 0x10000) { |
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725 if (busack_cycle <= context->current_cycle) { |
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726 busack = new_busack; |
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727 busack_cycle = CYCLE_NEVER; |
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|
728 } |
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729 if (!(busack==Z80_REQ_BUSY || reset)) { |
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730 location &= 0x7FFF; |
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731 if (location < 0x4000) { |
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732 value = z80_ram[location & 0x1FFE]; |
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733 } else if (location < 0x6000) { |
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|
734 ym_run(gen->ym, context->current_cycle); |
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735 value = ym_read_status(gen->ym); |
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736 } else { |
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|
737 value = 0xFF; |
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|
738 } |
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739 value = value | (value << 8); |
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740 } else { |
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741 value = 0xFFFF; |
88
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|
742 } |
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|
743 } else { |
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744 location &= 0x1FFF; |
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745 if (location < 0x100) { |
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|
746 switch(location/2) |
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|
747 { |
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748 case 0x0: |
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749 //version bits should be 0 for now since we're not emulating TMSS |
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750 //Not sure about the other bits |
343
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751 value = version_reg; |
153
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|
752 break; |
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753 case 0x1: |
343
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754 value = io_data_read(&gamepad_1, context); |
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755 break; |
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756 case 0x2: |
343
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757 value = io_data_read(&gamepad_2, context); |
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758 break; |
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|
759 case 0x3://PORT C Data |
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|
760 break; |
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761 case 0x4: |
343
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762 value = gamepad_1.control; |
153
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|
763 break; |
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764 case 0x5: |
343
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765 value = gamepad_2.control; |
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|
766 break; |
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|
767 case 0x6: |
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|
768 //PORT C Control |
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|
769 value = 0; |
153
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770 break; |
343
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|
771 default: |
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772 value = 0; |
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|
773 } |
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774 value = value | (value << 8); |
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|
775 //printf("Word read to %X returned %d\n", location, value); |
88
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|
776 } else { |
153
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|
777 if (location == 0x1100) { |
336
87b65e5ce1ab
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|
778 if (busack_cycle <= context->current_cycle) { |
153
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diff
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|
779 busack = new_busack; |
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diff
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|
780 busack_cycle = CYCLE_NEVER; |
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|
781 } |
343
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782 value = (Z80_RES_BUSACK || busack) << 8; |
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783 //printf("Word read of BUSREQ returned %d\n", value); |
153
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|
784 } else if (location == 0x1200) { |
343
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|
785 value = (!reset) << 8; |
153
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diff
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|
786 } else { |
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diff
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|
787 printf("Word read of unknown IO location: %X\n", location); |
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|
788 } |
88
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changeset
|
789 } |
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diff
changeset
|
790 } |
343
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diff
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|
791 return value; |
88
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changeset
|
792 } |
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parents:
diff
changeset
|
793 |
290
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|
794 z80_context * z80_write_ym(uint16_t location, z80_context * context, uint8_t value) |
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diff
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|
795 { |
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diff
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|
796 genesis_context * gen = context->system; |
171f97e70d85
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diff
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|
797 ym_run(gen->ym, (context->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_68K); |
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diff
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|
798 if (location & 1) { |
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diff
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|
799 ym_data_write(gen->ym, value); |
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diff
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|
800 } else if (location & 2) { |
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diff
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|
801 ym_address_write_part2(gen->ym, value); |
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|
802 } else { |
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diff
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|
803 ym_address_write_part1(gen->ym, value); |
171f97e70d85
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diff
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|
804 } |
171f97e70d85
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diff
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|
805 return context; |
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289
diff
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|
806 } |
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289
diff
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|
807 |
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289
diff
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|
808 uint8_t z80_read_ym(uint16_t location, z80_context * context) |
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diff
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|
809 { |
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289
diff
changeset
|
810 genesis_context * gen = context->system; |
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|
811 ym_run(gen->ym, (context->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_68K); |
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|
812 return ym_read_status(gen->ym); |
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|
813 } |
171f97e70d85
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|
814 |
351
2f264d2a60c2
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346
diff
changeset
|
815 uint16_t read_sram_w(uint32_t address, m68k_context * context) |
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diff
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|
816 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
817 genesis_context * gen = context->system; |
2f264d2a60c2
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diff
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|
818 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
819 switch(gen->save_flags) |
2f264d2a60c2
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diff
changeset
|
820 { |
2f264d2a60c2
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346
diff
changeset
|
821 case RAM_FLAG_BOTH: |
2f264d2a60c2
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diff
changeset
|
822 return gen->save_ram[address] << 8 | gen->save_ram[address+1]; |
2f264d2a60c2
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diff
changeset
|
823 case RAM_FLAG_EVEN: |
2f264d2a60c2
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diff
changeset
|
824 return gen->save_ram[address >> 1] << 8 | 0xFF; |
2f264d2a60c2
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diff
changeset
|
825 case RAM_FLAG_ODD: |
2f264d2a60c2
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diff
changeset
|
826 return gen->save_ram[address >> 1] | 0xFF00; |
2f264d2a60c2
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diff
changeset
|
827 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
828 return 0xFFFF;//We should never get here |
2f264d2a60c2
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346
diff
changeset
|
829 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
830 |
2f264d2a60c2
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parents:
346
diff
changeset
|
831 uint8_t read_sram_b(uint32_t address, m68k_context * context) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
832 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
833 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
834 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
835 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
836 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
837 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
838 return gen->save_ram[address]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
839 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
840 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
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346
diff
changeset
|
841 return 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
842 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
843 return gen->save_ram[address >> 1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
844 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
845 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
846 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
847 return gen->save_ram[address >> 1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
848 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
849 return 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
850 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
851 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
852 return 0xFF;//We should never get here |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
853 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
854 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
855 m68k_context * write_sram_area_w(uint32_t address, m68k_context * context, uint16_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
856 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
857 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
858 if ((gen->bank_regs[0] & 0x3) == 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
859 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
860 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
861 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
862 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
863 gen->save_ram[address] = value >> 8; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
864 gen->save_ram[address+1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
865 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
866 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
867 gen->save_ram[address >> 1] = value >> 8; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
868 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
869 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
870 gen->save_ram[address >> 1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
871 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
872 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
873 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
874 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
875 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
876 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
877 m68k_context * write_sram_area_b(uint32_t address, m68k_context * context, uint8_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
878 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
879 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
880 if ((gen->bank_regs[0] & 0x3) == 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
881 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
882 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
883 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
884 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
885 gen->save_ram[address] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
886 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
887 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
888 if (!(address & 1)) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
889 gen->save_ram[address >> 1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
890 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
891 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
892 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
893 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
894 gen->save_ram[address >> 1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
895 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
896 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
897 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
898 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
899 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
900 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
901 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
902 m68k_context * write_bank_reg_w(uint32_t address, m68k_context * context, uint16_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
903 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
904 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
905 address &= 0xE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
906 address >>= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
907 gen->bank_regs[address] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
908 if (!address) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
909 if (value & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
910 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
911 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
912 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
913 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
914 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
915 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
916 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
917 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
918 m68k_context * write_bank_reg_b(uint32_t address, m68k_context * context, uint8_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
919 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
920 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
921 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
922 address &= 0xE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
923 address >>= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
924 gen->bank_regs[address] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
925 if (!address) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
926 if (value & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
927 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
928 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
929 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
930 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
931 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
932 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
933 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
934 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
935 |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
936 typedef struct bp_def { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
937 struct bp_def * next; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
938 uint32_t address; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
939 uint32_t index; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
940 } bp_def; |
ebcbdd1c4cc8
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941 |
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942 bp_def * breakpoints = NULL; |
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943 uint32_t bp_index = 0; |
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944 |
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945 bp_def ** find_breakpoint(bp_def ** cur, uint32_t address) |
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946 { |
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947 while (*cur) { |
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948 if ((*cur)->address == address) { |
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949 break; |
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950 } |
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951 cur = &((*cur)->next); |
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952 } |
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953 return cur; |
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954 } |
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955 |
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956 bp_def ** find_breakpoint_idx(bp_def ** cur, uint32_t index) |
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957 { |
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958 while (*cur) { |
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959 if ((*cur)->index == index) { |
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960 break; |
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961 } |
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962 cur = &((*cur)->next); |
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963 } |
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964 return cur; |
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965 } |
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966 |
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967 char * find_param(char * buf) |
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968 { |
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969 for (; *buf; buf++) { |
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970 if (*buf == ' ') { |
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971 if (*(buf+1)) { |
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972 return buf+1; |
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973 } |
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974 } |
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975 } |
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976 return NULL; |
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977 } |
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978 |
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979 void strip_nl(char * buf) |
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980 { |
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981 for(; *buf; buf++) { |
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982 if (*buf == '\n') { |
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983 *buf = 0; |
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984 return; |
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985 } |
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986 } |
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987 } |
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988 |
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989 m68k_context * debugger(m68k_context * context, uint32_t address) |
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990 { |
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991 static char last_cmd[1024]; |
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992 char input_buf[1024]; |
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993 static uint32_t branch_t; |
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994 static uint32_t branch_f; |
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995 m68kinst inst; |
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996 //probably not necessary, but let's play it safe |
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997 address &= 0xFFFFFF; |
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998 if (address == branch_t) { |
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999 bp_def ** f_bp = find_breakpoint(&breakpoints, branch_f); |
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1000 if (!*f_bp) { |
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1001 remove_breakpoint(context, branch_f); |
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1002 } |
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1003 branch_t = branch_f = 0; |
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1004 } else if(address == branch_f) { |
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1005 bp_def ** t_bp = find_breakpoint(&breakpoints, branch_t); |
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1006 if (!*t_bp) { |
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1007 remove_breakpoint(context, branch_t); |
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1008 } |
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1009 branch_t = branch_f = 0; |
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1010 } |
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1011 //Check if this is a user set breakpoint, or just a temporary one |
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1012 bp_def ** this_bp = find_breakpoint(&breakpoints, address); |
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1013 if (*this_bp) { |
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1014 printf("Breakpoint %d hit\n", (*this_bp)->index); |
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1015 } else { |
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1016 remove_breakpoint(context, address); |
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1017 } |
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1018 uint16_t * pc; |
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1019 if (address < 0x400000) { |
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1020 pc = cart + address/2; |
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1021 } else if(address > 0xE00000) { |
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1022 pc = ram + (address & 0xFFFF)/2; |
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1023 } else { |
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1024 fprintf(stderr, "Entered debugger at address %X\n", address); |
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1025 exit(1); |
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1026 } |
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1027 uint16_t * after_pc = m68k_decode(pc, &inst, address); |
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1028 m68k_disasm(&inst, input_buf); |
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1029 printf("%X: %s\n", address, input_buf); |
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1030 uint32_t after = address + (after_pc-pc)*2; |
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1031 int debugging = 1; |
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1032 while (debugging) { |
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1033 fputs(">", stdout); |
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1034 if (!fgets(input_buf, sizeof(input_buf), stdin)) { |
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1035 fputs("fgets failed", stderr); |
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1036 break; |
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1037 } |
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1038 strip_nl(input_buf); |
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1039 //hitting enter repeats last command |
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1040 if (input_buf[0]) { |
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1041 strcpy(last_cmd, input_buf); |
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1042 } else { |
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1043 strcpy(input_buf, last_cmd); |
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1044 } |
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1045 char * param; |
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1046 char format[8]; |
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1047 uint32_t value; |
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1048 bp_def * new_bp; |
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1049 switch(input_buf[0]) |
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1050 { |
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1051 case 'c': |
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1052 puts("Continuing"); |
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diff
changeset
|
1053 debugging = 0; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1054 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1055 case 'b': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1056 param = find_param(input_buf); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1057 if (!param) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1058 fputs("b command requires a parameter\n", stderr); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1059 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1060 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1061 value = strtol(param, NULL, 16); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1062 insert_breakpoint(context, value, (uint8_t *)debugger); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1063 new_bp = malloc(sizeof(bp_def)); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1064 new_bp->next = breakpoints; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1065 new_bp->address = value; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1066 new_bp->index = bp_index++; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1067 breakpoints = new_bp; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1068 printf("Breakpoint %d set at %X\n", new_bp->index, value); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1069 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1070 case 'a': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1071 param = find_param(input_buf); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1072 if (!param) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1073 fputs("a command requires a parameter\n", stderr); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1074 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1075 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1076 value = strtol(param, NULL, 16); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1077 insert_breakpoint(context, value, (uint8_t *)debugger); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1078 debugging = 0; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1079 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1080 case 'd': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1081 param = find_param(input_buf); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1082 if (!param) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1083 fputs("b command requires a parameter\n", stderr); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1084 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1085 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1086 value = atoi(param); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1087 this_bp = find_breakpoint_idx(&breakpoints, value); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1088 if (!*this_bp) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1089 fprintf(stderr, "Breakpoint %d does not exist\n", value); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1090 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1091 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1092 new_bp = *this_bp; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1093 *this_bp = (*this_bp)->next; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1094 free(new_bp); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1095 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1096 case 'p': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1097 strcpy(format, "%s: %d\n"); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1098 if (input_buf[1] == '/') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1099 switch (input_buf[2]) |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1100 { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1101 case 'x': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1102 case 'X': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1103 case 'd': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1104 case 'c': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1105 format[5] = input_buf[2]; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1106 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1107 default: |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1108 fprintf(stderr, "Unrecognized format character: %c\n", input_buf[2]); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1109 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1110 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1111 param = find_param(input_buf); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1112 if (!param) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1113 fputs("p command requires a parameter\n", stderr); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1114 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1115 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1116 if (param[0] == 'd' && param[1] >= '0' && param[1] <= '7') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1117 value = context->dregs[param[1]-'0']; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1118 } else if (param[0] == 'a' && param[1] >= '0' && param[1] <= '7') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1119 value = context->aregs[param[1]-'0']; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1120 } else if (param[0] == 'S' && param[1] == 'R') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1121 value = (context->status << 8); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1122 for (int flag = 0; flag < 5; flag++) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1123 value |= context->flags[flag] << (4-flag); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1124 } |
185
b204fbed4efe
Add ability to print out current 68K cycle in debugger
Mike Pavone <pavone@retrodev.com>
parents:
184
diff
changeset
|
1125 } else if(param[0] == 'c') { |
b204fbed4efe
Add ability to print out current 68K cycle in debugger
Mike Pavone <pavone@retrodev.com>
parents:
184
diff
changeset
|
1126 value = context->current_cycle; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1127 } else if (param[0] == '0' && param[1] == 'x') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1128 uint32_t p_addr = strtol(param+2, NULL, 16); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1129 value = read_dma_value(p_addr/2); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1130 } else { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1131 fprintf(stderr, "Unrecognized parameter to p: %s\n", param); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1132 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1133 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1134 printf(format, param, value); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1135 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1136 case 'n': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1137 //TODO: Deal with jmp, dbcc, rtr and rte |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1138 if (inst.op == M68K_RTS) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1139 after = (read_dma_value(context->aregs[7]/2) << 16) | read_dma_value(context->aregs[7]/2 + 1); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1140 } else if(inst.op == M68K_BCC && inst.extra.cond != COND_FALSE) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1141 if (inst.extra.cond = COND_TRUE) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1142 after = inst.address + 2 + inst.src.params.immed; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1143 } else { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1144 branch_f = after; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1145 branch_t = inst.address + 2 + inst.src.params.immed; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1146 insert_breakpoint(context, branch_t, (uint8_t *)debugger); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1147 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1148 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1149 insert_breakpoint(context, after, (uint8_t *)debugger); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1150 debugging = 0; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1151 break; |
327
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1152 case 'v': { |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1153 genesis_context * gen = context->system; |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1154 //VDP debug commands |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1155 switch(input_buf[1]) |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1156 { |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1157 case 's': |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1158 vdp_print_sprite_table(gen->vdp); |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1159 break; |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1160 case 'r': |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1161 vdp_print_reg_explain(gen->vdp); |
1b00258b1f29
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
Mike Pavone <pavone@retrodev.com>
parents:
321
diff
changeset
|
1162 break; |
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|
1163 } |
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|
1164 break; |
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|
1165 } |
184
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1166 case 'q': |
ebcbdd1c4cc8
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1167 puts("Quitting"); |
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|
1168 exit(0); |
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1169 break; |
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|
1170 default: |
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|
1171 fprintf(stderr, "Unrecognized debugger command %s\n", input_buf); |
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|
1172 break; |
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|
1173 } |
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|
1174 } |
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|
1175 return context; |
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|
1176 } |
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1177 |
351
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|
1178 #define ROM_END 0x1A4 |
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1179 #define RAM_ID 0x1B0 |
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1180 #define RAM_FLAGS 0x1B2 |
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|
1181 #define RAM_START 0x1B4 |
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1182 #define RAM_END 0x1B8 |
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|
1183 #define MAX_MAP_CHUNKS (4+7+1) |
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1184 #define RAM_FLAG_MASK 0x1800 |
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|
1185 |
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|
1186 const memmap_chunk static_map[] = { |
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1187 {0, 0x400000, 0xFFFFFF, 0, MMAP_READ, cart, |
343
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Mostly working runtime generation of memory map read/write functions
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|
1188 NULL, NULL, NULL, NULL}, |
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|
1189 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, |
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|
1190 NULL, NULL, NULL, NULL}, |
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|
1191 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL, |
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diff
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|
1192 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write, |
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|
1193 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b}, |
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|
1194 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, NULL, |
467bfa17004a
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|
1195 (read_16_fun)io_read_w, (write_16_fun)io_write_w, |
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|
1196 (read_8_fun)io_read, (write_8_fun)io_write} |
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|
1197 }; |
351
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|
1198 |
2f264d2a60c2
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|
1199 char * sram_filename; |
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|
1200 genesis_context * genesis; |
2f264d2a60c2
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|
1201 void save_sram() |
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1202 { |
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|
1203 FILE * f = fopen(sram_filename, "wb"); |
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|
1204 if (!f) { |
2f264d2a60c2
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|
1205 fprintf(stderr, "Failed to open SRAM file %s for writing\n", sram_filename); |
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|
1206 return; |
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|
1207 } |
2f264d2a60c2
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346
diff
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|
1208 uint32_t size = genesis->save_ram_mask+1; |
2f264d2a60c2
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346
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|
1209 if (genesis->save_flags != RAM_FLAG_BOTH) { |
2f264d2a60c2
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346
diff
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|
1210 size/= 2; |
2f264d2a60c2
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346
diff
changeset
|
1211 } |
2f264d2a60c2
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346
diff
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|
1212 fwrite(genesis->save_ram, 1, size, f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1213 fclose(f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1214 printf("Saved SRAM to %s\n", sram_filename); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1215 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1216 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1217 void init_run_cpu(genesis_context * gen, int debug, FILE * address_log) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1218 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1219 m68k_context context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1220 x86_68k_options opts; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1221 gen->m68k = &context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1222 memmap_chunk memmap[MAX_MAP_CHUNKS]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1223 uint32_t num_chunks; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1224 void * initial_mapped = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1225 gen->save_ram = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1226 //TODO: Handle carts larger than 4MB |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1227 //TODO: Handle non-standard mappers |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1228 uint32_t size; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1229 if ((cart[RAM_ID/2] & 0xFF) == 'A' && (cart[RAM_ID/2] >> 8) == 'R') { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1230 //Cart has save RAM |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1231 uint32_t rom_end = ((cart[ROM_END/2] << 16) | cart[ROM_END/2+1]) + 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1232 uint32_t ram_start = (cart[RAM_START/2] << 16) | cart[RAM_START/2+1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1233 uint32_t ram_end = (cart[RAM_END/2] << 16) | cart[RAM_END/2+1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1234 uint16_t ram_flags = cart[RAM_FLAGS/2]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1235 gen->save_flags = ram_flags & RAM_FLAG_MASK; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1236 memset(memmap, 0, sizeof(memmap_chunk)*2); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1237 if (ram_start >= rom_end) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1238 memmap[0].end = rom_end; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1239 memmap[0].mask = 0xFFFFFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1240 memmap[0].flags = MMAP_READ; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1241 memmap[0].buffer = cart; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1242 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1243 ram_start &= 0xFFFFFE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
1244 ram_end |= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1245 memmap[1].start = ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1246 gen->save_ram_mask = memmap[1].mask = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1247 ram_end += 1; |
2f264d2a60c2
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|
1248 memmap[1].end = ram_end; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1249 memmap[1].flags = MMAP_READ | MMAP_WRITE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1250 size = ram_end-ram_start; |
2f264d2a60c2
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|
1251 if ((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_ODD) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1252 memmap[1].flags |= MMAP_ONLY_ODD; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
1253 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1254 } else if((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_EVEN) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
1255 memmap[1].flags |= MMAP_ONLY_EVEN; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
1256 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1257 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1258 memmap[1].buffer = gen->save_ram = malloc(size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1259 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1260 memcpy(memmap+2, static_map+1, sizeof(static_map)-sizeof(static_map[0])); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1261 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1; |
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1262 } else { |
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|
1263 //Assume the standard Sega mapper for now |
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|
1264 memmap[0].end = 0x200000; |
2f264d2a60c2
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|
1265 memmap[0].mask = 0xFFFFFF; |
2f264d2a60c2
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|
1266 memmap[0].flags = MMAP_READ; |
2f264d2a60c2
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|
1267 memmap[0].buffer = cart; |
2f264d2a60c2
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|
1268 |
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|
1269 memmap[1].start = 0x200000; |
2f264d2a60c2
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|
1270 memmap[1].end = 0x400000; |
2f264d2a60c2
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|
1271 memmap[1].mask = 0x1FFFFF; |
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|
1272 ram_start &= 0xFFFFFE; |
2f264d2a60c2
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|
1273 ram_end |= 1; |
2f264d2a60c2
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|
1274 gen->save_ram_mask = ram_end-ram_start; |
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|
1275 memmap[1].flags = MMAP_READ | MMAP_PTR_IDX | MMAP_FUNC_NULL; |
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|
1276 memmap[1].ptr_index = 2; |
2f264d2a60c2
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|
1277 memmap[1].read_16 = (read_16_fun)read_sram_w;//these will only be called when mem_pointers[2] == NULL |
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|
1278 memmap[1].read_8 = (read_8_fun)read_sram_b; |
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|
1279 memmap[1].write_16 = (write_16_fun)write_sram_area_w;//these will be called all writes to the area |
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|
1280 memmap[1].write_8 = (write_8_fun)write_sram_area_b; |
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|
1281 memcpy(memmap+2, static_map+1, sizeof(static_map)-sizeof(static_map[0])); |
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|
1282 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1; |
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|
1283 memset(memmap+num_chunks, 0, sizeof(memmap[num_chunks])); |
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|
1284 memmap[num_chunks].start = 0xA13000; |
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346
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changeset
|
1285 memmap[num_chunks].end = 0xA13100; |
2f264d2a60c2
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346
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|
1286 memmap[num_chunks].mask = 0xFF; |
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diff
changeset
|
1287 memmap[num_chunks].write_16 = (write_16_fun)write_bank_reg_w; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1288 memmap[num_chunks].write_8 = (write_8_fun)write_bank_reg_b; |
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|
1289 num_chunks++; |
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|
1290 ram_end++; |
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diff
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|
1291 size = ram_end-ram_start; |
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|
1292 if ((ram_flags & RAM_FLAG_MASK) != RAM_FLAG_BOTH) { |
2f264d2a60c2
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|
1293 size /= 2; |
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|
1294 } |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1295 gen->save_ram = malloc(size); |
2f264d2a60c2
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|
1296 memmap[1].buffer = initial_mapped = cart + 0x200000/2; |
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|
1297 } |
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|
1298 } else { |
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|
1299 memcpy(memmap, static_map, sizeof(static_map)); |
2f264d2a60c2
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|
1300 num_chunks = sizeof(static_map)/sizeof(memmap_chunk); |
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|
1301 } |
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346
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|
1302 if (gen->save_ram) { |
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346
diff
changeset
|
1303 memset(gen->save_ram, 0, size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1304 FILE * f = fopen(sram_filename, "rb"); |
2f264d2a60c2
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|
1305 if (f) { |
2f264d2a60c2
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346
diff
changeset
|
1306 uint32_t read = fread(gen->save_ram, 1, size, f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1307 fclose(f); |
2f264d2a60c2
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diff
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|
1308 if (read > 0) { |
2f264d2a60c2
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|
1309 printf("Loaded SRAM from %s\n", sram_filename); |
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|
1310 } |
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|
1311 } |
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346
diff
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|
1312 atexit(save_sram); |
2f264d2a60c2
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diff
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|
1313 } |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1314 init_x86_68k_opts(&opts, memmap, num_chunks); |
211 | 1315 opts.address_log = address_log; |
1316 init_68k_context(&context, opts.native_code_map, &opts); | |
1317 | |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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diff
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|
1318 context.video_context = gen->vdp; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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|
1319 context.system = gen; |
211 | 1320 //cartridge ROM |
1321 context.mem_pointers[0] = cart; | |
342
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
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341
diff
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|
1322 context.target_cycle = context.sync_cycle = mclks_per_frame/MCLKS_PER_68K; |
211 | 1323 //work RAM |
1324 context.mem_pointers[1] = ram; | |
351
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|
1325 //save RAM/map |
2f264d2a60c2
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|
1326 context.mem_pointers[2] = initial_mapped; |
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|
1327 context.mem_pointers[3] = (uint16_t *)gen->save_ram; |
211 | 1328 uint32_t address; |
1329 address = cart[2] << 16 | cart[3]; | |
1330 translate_m68k_stream(address, &context); | |
1331 if (debug) { | |
1332 insert_breakpoint(&context, address, (uint8_t *)debugger); | |
1333 } | |
1334 m68k_reset(&context); | |
1335 } | |
1336 | |
340
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|
1337 char title[64]; |
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|
1338 |
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|
1339 #define TITLE_START 0x150 |
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Set window title based on ROM header name
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1340 #define TITLE_END (TITLE_START+48) |
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1341 |
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|
1342 void update_title() |
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|
1343 { |
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|
1344 uint16_t *last = cart + TITLE_END/2 - 1; |
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|
1345 while(last > cart + TITLE_START/2 && *last == 0x2020) |
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|
1346 { |
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|
1347 last--; |
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|
1348 } |
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|
1349 uint16_t *start = cart + TITLE_START/2; |
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1350 char *cur = title; |
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1351 char last_char = ' '; |
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1352 for (; start != last; start++) |
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|
1353 { |
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1354 if ((last_char != ' ' || (*start >> 8) != ' ') && (*start >> 8) < 0x80) { |
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|
1355 *(cur++) = *start >> 8; |
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|
1356 last_char = *start >> 8; |
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|
1357 } |
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|
1358 if (last_char != ' ' || (*start & 0xFF) != ' ' && (*start & 0xFF) < 0x80) { |
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|
1359 *(cur++) = *start; |
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|
1360 last_char = *start & 0xFF; |
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|
1361 } |
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|
1362 } |
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|
1363 *(cur++) = *start >> 8; |
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|
1364 if ((*start & 0xFF) != ' ') { |
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|
1365 *(cur++) = *start; |
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|
1366 } |
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|
1367 strcpy(cur, " - BlastEm"); |
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1368 } |
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|
1369 |
341
6ad8e36de685
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|
1370 #define REGION_START 0x1F0 |
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1371 |
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diff
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|
1372 int detect_specific_region(char region) |
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340
diff
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|
1373 { |
346
aff29d50afd5
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|
1374 return (cart[REGION_START/2] & 0xFF) == region || (cart[REGION_START/2] >> 8) == region || (cart[REGION_START/2+1] & 0xFF) == region; |
341
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340
diff
changeset
|
1375 } |
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diff
changeset
|
1376 |
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diff
changeset
|
1377 void detect_region() |
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340
diff
changeset
|
1378 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
1379 if (detect_specific_region('U')|| detect_specific_region('B') || detect_specific_region('4')) { |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1380 version_reg = NO_DISK | USA; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1381 } else if (detect_specific_region('J')) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1382 version_reg = NO_DISK | JAP; |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
1383 } else if (detect_specific_region('E') || detect_specific_region('A')) { |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1384 version_reg = NO_DISK | EUR; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1385 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1386 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1387 |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1388 int main(int argc, char ** argv) |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1389 { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1390 if (argc < 2) { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1391 fputs("Usage: blastem FILENAME\n", stderr); |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1392 return 1; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1393 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1394 if(!load_rom(argv[1])) { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1395 fprintf(stderr, "Failed to open %s for reading\n", argv[1]); |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1396 return 1; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1397 } |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1398 detect_region(); |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1399 int width = -1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1400 int height = -1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1401 int debug = 0; |
197
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1402 FILE *address_log = NULL; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1403 for (int i = 2; i < argc; i++) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1404 if (argv[i][0] == '-') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1405 switch(argv[i][1]) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1406 case 'd': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1407 debug = 1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1408 break; |
338
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents:
336
diff
changeset
|
1409 case 'f': |
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents:
336
diff
changeset
|
1410 frame_limit = 0; |
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents:
336
diff
changeset
|
1411 break; |
197
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1412 case 'l': |
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1413 address_log = fopen("address.log", "w"); |
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1414 break; |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1415 case 'v': |
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1416 headless = 1; |
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1417 break; |
265
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1418 case 'n': |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1419 z80_enabled = 0; |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1420 break; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1421 case 'r': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1422 i++; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1423 if (i >= argc) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1424 fputs("-r must be followed by region (J, U or E)\n", stderr); |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1425 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1426 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1427 switch (argv[i][0]) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1428 { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1429 case 'j': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1430 case 'J': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1431 version_reg = NO_DISK | JAP; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1432 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1433 case 'u': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1434 case 'U': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1435 version_reg = NO_DISK | USA; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1436 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1437 case 'e': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1438 case 'E': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1439 version_reg = NO_DISK | EUR; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1440 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1441 default: |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1442 fprintf(stderr, "'%c' is not a valid region character for the -r option\n", argv[i][0]); |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1443 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1444 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1445 break; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1446 default: |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1447 fprintf(stderr, "Unrecognized switch %s\n", argv[i]); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1448 return 1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1449 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1450 } else if (width < 0) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1451 width = atoi(argv[i]); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1452 } else if (height < 0) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1453 height = atoi(argv[i]); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1454 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1455 } |
340
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1456 update_title(); |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1457 width = width < 320 ? 320 : width; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1458 height = height < 240 ? (width/320) * 240 : height; |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1459 if (!headless) { |
340
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1460 render_init(width, height, title); |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1461 } |
342
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1462 if (version_reg & 0x40) { |
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1463 mclks_per_frame = MCLKS_LINE * LINES_PAL; |
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1464 render_fps(50); |
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1465 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1466 vdp_context v_context; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1467 |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1468 init_vdp_context(&v_context); |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1469 |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1470 ym2612_context y_context; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1471 ym_init(&y_context); |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1472 |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1473 z80_context z_context; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1474 x86_z80_options z_opts; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1475 init_x86_z80_opts(&z_opts); |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1476 init_z80_context(&z_context, &z_opts); |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1477 |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1478 genesis_context gen; |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1479 |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1480 z_context.system = &gen; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1481 z_context.mem_pointers[0] = z80_ram; |
342
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1482 z_context.sync_cycle = z_context.target_cycle = mclks_per_frame/MCLKS_PER_Z80; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1483 z_context.int_cycle = CYCLE_NEVER; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1484 z_context.mem_pointers[1] = z_context.mem_pointers[2] = (uint8_t *)cart; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1485 |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1486 gen.z80 = &z_context; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1487 gen.vdp = &v_context; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1488 gen.ym = &y_context; |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1489 genesis = &gen; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1490 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1491 int fname_size = strlen(argv[1]); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1492 sram_filename = malloc(fname_size+6); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1493 memcpy(sram_filename, argv[1], fname_size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1494 int i; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1495 for (i = fname_size-1; fname_size >= 0; --i) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
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1496 if (sram_filename[i] == '.') { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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1497 strcpy(sram_filename + i + 1, "sram"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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1498 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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1499 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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1500 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
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1501 if (i < 0) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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1502 strcpy(sram_filename + fname_size, ".sram"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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1503 } |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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1504 |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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1505 init_run_cpu(&gen, debug, address_log); |
88
c339559f1d4f
Forgot to add blastem main file earlier
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1506 return 0; |
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
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1507 } |